Sunday, August 2, 2020

Yemen's Multilayered Civil War: A Brief History

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Anant Jani

Article Title

Yemen's Multilayered Civil War: A Brief History

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Global Views 360

Publication Date

August 2, 2020

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Children in Yemen

Children in Yemen | Source: Rod Waddington via Flickr

This is the 1st part of a short explainer article series on the current crisis in Yemen.

Since 2015, Yemen has been at war on two different fronts, 1) The Civil War between the Iran-backed Houthi rebels and the UAE-Saudi Arabia backed government headed by Abdrabbuh Mansur Hadi, and 2) the war against the local terrorist outfits of Al-Qaeda and ISIS.

However, last year one more complexity was added to the conflict when UAE withdrew from the coalition backing Hadi government and later threw its support behind another secessionist force in southern Yemen, which seeks to re-create the State of South Yemen, as it was before the unification of Yemen in 1990.

As of early this year, it has added another layer to the war: the failing healthcare infrastructure and the rise of COVID-19.

The staggering cost of this war in the past five years has prompted the UN to name it the worst man-made humanitarian crisis in history, with Some 24 million Yemeni people - 80 percent of the country's population - requiring assistance or protection.

This series of articles seeks to build historical context to follow the current events in Yemen, believing much of the recent media coverage to have been ignored, or otherwise made wholly uncontextualized in the process of following the crisis for over a decade.

Yemen and the greater neighbourhood | Source: Google Map

The History

Much of the current conflict can only be understood as a result of the events of the latter half of the 20th century. Here is a brief look at the history that has shaped today’s wars in Yemen.

At the heart of several issues in the conflict is the fact that modern day Yemen was initially divided into North Yemen and South Yemen until 1990, when it was unified.

Yemen and the greater neighbourhood | Source: Wikimedia

North Yemen:

The Yemen Arab Republic (YAR), a coalition in North Yemen, overthrew the Mutawakilite Kingdom in 1970, which had been ruling since Yemen’s decolonization, in 1918. The YAR established their capital at Sana’a, a site which will often be the site of conflict in the following years.
This part of Yemen, during the cold war  was backed the countries aligned with the anti-communist block like Saudi Arabia, Jordan, the US, the UK and West Germany. The influence of Saudi Arabia and their relations with the US will come to play a greater role in the following decades.

South Yemen:

This referred to the region that was under the British Raj as the Aden Protectorate, since 1874. It consisted of two-thirds of present-day Yemen. In 1937 it became a Province of the British Raj, and in 1963, it collapsed and an emergency declared. The collapse was the joint effort of the National Liberation Front (NLF) and the Front for the Liberation of Occupied South Yemen (FLOSY).

Aden was used by the East India Company as a coal depot, and to stop Arab pirates from harassing British-India trade. Until 1937, Aden was part of British India, officially titled the Aden Protectorate.

Aden, like Sana’a will come to be the capital of southern Yemen, and the site of many conflicts.

This part of Yemen, during the cold war was backed by the Cummunist bloc countries like USSR, Cuba, and East Germany.

The Unification:

North and South Yemen united in 1990, after several years of conflict with one another. The leader of North Yemen, Ali Abdullah Saleh, was named President of unified Yemen in 1990. He was to continue ruling over Yemen for over three decades.

The unification of Yemen finally fulfilled almost a century of struggle that started during the British occupation and continued at different paces throughout the monarchy and cold war period. This unification also took away the privileges and power vested with many important tribes and people. Unlike the political forces, the armed forces of North and South Yemen were not unified at the time of political unification of the country.

The disgruntled former elites and the partisan army provided the fertile ground for the first civil war of Yemen which followed shortly after the unification.

Link to the second part.

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July 19, 2021 11:59 AM

3D Printing: The direction to go for the Indian Defense and Aerospace Industries

3D printing is the next big game-changer on the technological front, almost a revolution if you will. 3D printing, also known as additive manufacturing, is a process of creating three-dimensional objects by layering two-dimensional cross sections on top of one another. The two-dimensional cross sections are computer-designed and rendered, which makes it all the more advanced. From Aerospace to Defense and Medical to Automotive, products manufactured via 3D printing are spreading their reach in the markets quite swiftly. This article will take a look at how 3D printing is beneficial and how the technology can transform the Indian and Defense and Aerospace sectors once utilized to its full potential.

Additive manufacturing has the power to unlock a wide range of opportunities. It uses a 3D printer to create a layer-by-layer “addition” of material which is digitally constructed. Different types of materials which are currently being used for the same are metals, ceramics, special plastics, synthetic resins, and etc. 3D printing not only reduces the cost of production of various components but also gives the power to manufacture locally with design flexibility. The technology significantly speeds the process of designing; this is mainly because there is no requirement of tools. Traditional manufacturing usually takes months to either acquire necessary tools and further produce parts and components or import components from various places. However, once 3D printers are acquired, which they might be costly in themselves, they would ensure a smoother production process. Hence, due to the combination of localized manufacturing and no tools, tailor-made designs can be produced to match the necessities of various industries.  

https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/MakerBot_ThingOMatic_Bre_Pettis.jpg/220px-MakerBot_ThingOMatic_Bre_Pettis.jpg
Figure 2: A typical 3D printer. Source: Bre Pettis via Flickr

India is gradually growing with respect to its utilization of 3D printing technology. In 2014, the 3D printers market was at an early stage with just 200-500 combined workforce of engineers, designers and sales representatives. Currently, start-ups are springing up in places like Bangalore, Chennai, Mumbai, Visakhapatnam, etc and they are producing essential parts for sectors like the Indian Navy, Air Force, ISRO and the HAL.  India’s 3D printing market is projected to reach $79 million by the end of 2021, while the global market is at around $15.8 billion, which suggests that India has a lot of catching up to do.

Applications in the Aerospace and Defense Industry

The Aerospace and Defense Industries are keen to pursue additive manufacturing, mainly because of benefits such as weight reduction, cost cutting and to meet their highly specific requirements. The additive process uses less material to manufacture components and also ensures minimal waste of material. Overall reduced weightage means that less fuel would be used in aircrafts and hence result in better environmental compatibility. Let’s examine a few instances in India where 3D printing startups have assisted and provided the defense and aerospace sectors with unique solutions.

Recently, in 2020, the Centre-run defense company Hindustan Aeronautics Limited (HAL) had signed a MoU (Memorandum of Understanding) with Wipro 3D, the metal additive manufacturing branch of Wipro Infrastructure Engineering. The initiative would primarily focus on the design, development, testing, manufacturing, and repairing of aerospace components using metal additive technology. HAL is using 3D printing to manufacture engine components, although it also provides support to helicopter and rotary wing products. HAL also provides products to the Indian Army, Air Force, Navy, and Coast Guard. Speaking about this collaboration, Shekhar Shrivastava, CEO of the Bangalore division of HAL, said, “This initiative between HAL and Wipro 3D will create a unique synergy of capabilities that can accelerate the adoption of metal additive manufacturing in aerospace in India. Qualification of parts for aerospace is challenging as it would require prove out and extensive testing followed by certification by regulatory authorities which may also include flight testing."

Down south, Karnataka, which produces more than 65 percent of India’s aerospace-related components and exports, has taken a number of initiatives to promote additive manufacturing by setting up 3D printing clusters and sponsoring 3D printing startups. For example, through its flagship programme ‘Start Up Karnataka’, the State has given grants to ‘Deltasys E-Forming’, a Belgaum based start-up, to develop hybrid composite 3D printers. These initiatives are quite appropriate since two-thirds of India’s aircraft and helicopter manufacturing for the defense takes place in Karnataka, and 3D printing would revolutionize these processes quite rapidly.

On the other coast, Chennai-based 3D printing startup, Fabheads Automation, was established in 2015 by an ISRO engineer turned entrepreneur Dhinesh Kanagaraj. The deep tech startup designs and develops high-end carbon fibre helicopter blades for the Indian Air Force. Traditionally, carbon fibre parts are fabricated by laborious manual processes with a lot of fabrication time and money spent. Dhinesh also observed a lot of material wastage when he worked on carbon fibres at ISRO.  Based on this, Fabheads has designed an automated 3D printer series to eliminate material waste and also improve efficiency of production of carbon fibre. Sectors like the DRDO are currently approaching the company given these innovative methods of production.

3D Printing Saves the Day for the Indian Navy

Further, the Indian Navy has partnered with ‘think3D’, a Hyderabad-based 3D printing start-up, to produce spare components via additive manufacturing for both on and off-shore set-ups. The Indian Navy uses a lot of machinery on its ships which are imported from other countries and are quite old.  Whenever a component gets damaged, it is hard to replace it either because there is no availability of the part or because there is significant delay before a part is received. This often proved to be costly for the Navy since the machines would have to be kept idle before a spare part was replaced along with the fact that procurement of the parts was no less expensive.

This is where think3D had stepped in and supplied 3D printed parts to the Indian Navy, which were successfully tested and incorporated into its machinery. An example of such a 3D printed part, which proved to be of crucial help, is that of a centrifugal pump impeller- a key component for a ship’s operation.

https://3dprintingindustry.com/wp-content/uploads/2020/04/4.jpg
Figure 3: An original impeller (left) vs. a 3D printed impeller (right). Image source: think3D

The impeller is a rotating component and it is very important for a ship as it transfers energy from the motor to a fluid that needs to be pumped by accelerating the fluid outwards from the centre of rotation.  On ships, this component is used to import seawater into various parts of the ship for regular use of the crew. These impellers are required to rotate at high speeds for long durations and need to be very carefully designed. 3D printing was the best solution to replace these parts, given the speed of production and lower expenses.

Given all the benefits of 3D printing, it is high time for the Indian market to expand its 3D printing industry and utilize it to its full potential. There are many other instances like the one of the impeller in the Aerospace and Defense industries which can easily be solved using 3D printing.

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